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#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <ctype.h>
#include "util.h"
#include "xml.h"
static unsigned int isbase = 0, islink = 0, isfeedlink = 0, found = 0;
static char feedlink[4096] = "", basehref[4096] = "";
static void
xmltagstart(XMLParser *p, const char *tag, size_t taglen) {
isbase = islink = isfeedlink = 0;
if(taglen == 4) { /* optimization */
if(!strncasecmp(tag, "base", taglen))
isbase = 1;
else if(!strncasecmp(tag, "link", taglen))
islink = 1;
}
}
static void
xmltagstartparsed(XMLParser *p, const char *tag, size_t taglen, int isshort) {
if(isfeedlink) {
printlink(feedlink, basehref, stdout);
putchar('\n');
found++;
}
}
static void
xmlattr(XMLParser *p, const char *tag, size_t taglen, const char *name,
size_t namelen, const char *value, size_t valuelen) {
if(namelen != 4) /* optimization */
return;
if(isbase) {
if(!strncasecmp(name, "href", namelen))
strlcpy(basehref, value, sizeof(basehref));
} else if(islink) {
if(!strncasecmp(name, "type", namelen)) {
if(!strncasecmp(value, "application/atom", strlen("application/atom")) ||
!strncasecmp(value, "application/rss", strlen("application/rss"))) {
isfeedlink = 1;
}
} else if(!strncasecmp(name, "href", namelen))
strlcpy(feedlink, value, sizeof(feedlink));
}
}
int
main(int argc, char **argv) {
XMLParser x;
/* base href */
if(argc > 1)
strlcpy(basehref, argv[1], sizeof(basehref));
xmlparser_init(&x, stdin);
x.xmltagstart = xmltagstart;
x.xmlattr = xmlattr;
x.xmltagstartparsed = xmltagstartparsed;
xmlparser_parse(&x);
return found > 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
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